First, a little background: Faverani played 23 games last year for Valencia Basket Club of the Spanish ACB League, averaging 9.3 points and 4.6 rebounds in 17 minutes.

He was eligible for the 2009 NBA draft but was not selected.

“He was not drafted because he was very immature and did not take the game seriously,” said an Eastern Conference scout who said he spent considerable time watching Faverani.

“He could not be trusted. He has done a lot of growing up, both on and off the floor, and has turned the corner, so to speak.”

In terms of how Faverani fits in with the Celtics, the scout said, “I can see him as a pick-and-pop big, offensively. Where he fits defensively and being a consistent rebounder will be the key.”

In describing Faverani’s strengths and weaknesses, the scout noted Faverani can shoot and that offense, overall, is his biggest strength.

“That’s what puts him on the floor — being hard to guard vs. mismatches,” the scout said. “He was never considered a defender/rebounder. He can run, is a good athlete.”

A Western Conference scout provided this take:

“He has got an NBA frame and great wingspan. He is pretty athletic and likes to work on the defensive end of the floor. He has good feet and he is good in [pick-and-roll] defense.

“He is active, can block shots from the weak side, and likes to bang. This is where his nickname ‘El Hombre Indestructible’ comes from.

“On offense he is still raw, he is not selfish and has decent passing skills from the low post. He is good as a roller in pick and rolls. He was shooting threes decently three years ago on a weaker team, but not consistently enough to let him continue that in Valencia [a high level team].

“I don’t remember back-to-the-basket moves except an interesting half-hook [shot]. He never had great exposure with the Brazilian [national team] because they have plenty of big guys and coach always preferred other bigs.

“I don’t know how good he can be in the NBA, but he is worth a try.”

As of Tuesday, the only other center on the Celtics roster is another Brazilian, Fab Melo, a second-year 7-footer out of Syracuse drafted in the first round (22d overall) in 2012.

But Melo is a long-term project, making it possible that Faverani becomes the starting center this season, depending on how he fares during training camp.